Home
Class 12
PHYSICS
Six molecules have speeds 2 units, 5 uni...

Six molecules have speeds 2 units, 5 units, 3 units, 6 units, 3 units and 5 units respectively. The rms speed is -

A

4.0 units

B

1.7 units

C

4.2 units

D

5.0 units

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • QUESTION PAPER 2007

    WB JEE PREVIOUS YEAR PAPER|Exercise PHYSICS|50 Videos
  • QUESTION PAPER 2009

    WB JEE PREVIOUS YEAR PAPER|Exercise Multiple Choice Questions (Physics)|40 Videos

Similar Questions

Explore conceptually related problems

BOT unit is a unit of

The dimension of two rectangular parallelopipeds are 6 unit, 4unit, 4 unit and 8 unit, (2h + 1)unit, 2 unit respectively. If the volume of the two parallelopipeds are equal, then the value of h is

A farmer mixes two brands P and Q of cattle feed. Brand P, costing Rs. 250 per bag, contains 3 units of nutritional element A, 2.5 units of element B and 2 units of element C. Brand Q costing Rs. 200 pre bag contains 1.5 units of nutritional element A, 11.25 units of element B, and 3 units of element c. The minimum requirements of nutrients A,B and C are 18 units, and 24 units respectively. Determine the number of bags of each brand which should be mixed in order to produce a mixture having a minimum cost per bag? What is the minimum cost of the mixture per bag.

A molecule cannot be tasted or smelled unit it has been

If the intercepts of the variable circle on the x- and yl-axis are 3 units and 6 units, respectively, then find the locus of the center of the variable circle.

Write True or False : If the volume and the base area of solid right circular cone are V cu.unit and A sq.unit respectively the its height is (3V)/A unit.

If the sides of triangle be 15 units , 12 units and 9 units then the area (in sq. units) of the triangle is-

If the volume, base area and height of a right circular cone are V cu unit, A sq.unit ant H unit respectively, then find the value of (AH)/V .

If the intercepts of the variable circle on the x- and y-axis are 2 units and 4 units, respectively, then find the locus of the center of the variable circle.

WB JEE PREVIOUS YEAR PAPER-QUESTION PAPER 2008-PHYSICS
  1. Two tuning forks of frequencies n(1) and n(2) produces n beats per s...

    Text Solution

    |

  2. A car moving with a velocity of 36 km/hr crosses a siren of frequency ...

    Text Solution

    |

  3. Six molecules have speeds 2 units, 5 units, 3 units, 6 units, 3 units ...

    Text Solution

    |

  4. Which one of the figures gives the temperature dependence of density o...

    Text Solution

    |

  5. A bullet emerges from a barrel of length 1.2 m with a speed of 640 m/s...

    Text Solution

    |

  6. A body of mass 3 kg acted upon by a constant force is displaced by 's'...

    Text Solution

    |

  7. The ionization potential of H atom is -13.6 eV. An electron in the gro...

    Text Solution

    |

  8. An experiment takes 10 minutes to raise temperature of water from 0^(@...

    Text Solution

    |

  9. Which of the following substances has the highest elasticity?

    Text Solution

    |

  10. A wire is stretched under a force. If the wire suddenly snaps the temp...

    Text Solution

    |

  11. When the room temperature becomes equal to the dew-point, the relative...

    Text Solution

    |

  12. At what temperature will the rms speed of air molecules be double that...

    Text Solution

    |

  13. The refractive indices of glass and quartz with respect to air are (3)...

    Text Solution

    |

  14. The radius of curvature of a concave mirror is 24cm and the image is m...

    Text Solution

    |

  15. A point source of light is kept at a depth of 'h' in water of r.i 4/3....

    Text Solution

    |

  16. Four point charges each '+q' is placed on the circumference of a circl...

    Text Solution

    |

  17. 64 identical spheres of charge q and capacitance C each are combined t...

    Text Solution

    |

  18. Lenz's law of electromagnetic induction corresponds to

    Text Solution

    |

  19. A silicon and a germanium diode has identical physical dimensions. The...

    Text Solution

    |

  20. A thin wire of resistance 4Omega is bent to form a circle. The resista...

    Text Solution

    |